1 -10 dB from rated sensitivity2 Full-space, 4 m3 Reference axis4 70-20 kHz average5 1k-10 k Hz average6 IEC, 2hrs, based on 16 Ω nominal impedance7 Calculated from rated noise power and sensitivity8 Reference plane is the plane with the loudspeaker baffle plane. Reference axis is the axis perpendicularto the reference plane and passing through the center of the baffle. Vertical plane is the plane intersecting the reference plane at a right angle, including the reference axis. Horizontal plane is the plane intersecting the reference plane and the vertical plane at a right angle, including the reference axis.